skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: On the microstructure and strengthening mechanism in oxide dispersion-strengthened 316 steel: A coordinated electron microscopy, atom probe tomography and in situ synchrotron tensile investigation

Abstract

In this study, an oxide dispersion-strengthened (ODS) 316 steel was developed to simultaneously provide the advantages of ODS steels in mechanical strength and radiation tolerance as well as the excellence of austenitic steels in creep performance and corrosion resistance. The precipitate phases within the austenite matrix were identified by the combined techniques of atom probe tomography (APT), scanning transmission electron microscopy equipped with electron dispersive X-ray spectroscopy (STEM-EDS), and synchrotron wide-angle and small-angle X-ray scattering (WAXS and SAXS). Coarse TiN, hexagonal YAlO 3 and orthorhombic YAlO 3 precipitates were found along with fine Y-Ti-O nanoparticles. In situ WAXS experiments were performed at room and elevated temperatures to examine the size effect on the load partitioning phenomenon for TiN, hexagonal YAlO 3 and Y 2Ti 2O 7 phases. In addition, the dislocation density evolution throughout the tensile tests was analyzed by the modified Williamson-Hall method and confirmed by transmission electron microscopy (TEM) observations, revealing the difference in plasticity at various temperatures.

Authors:
 [1];  [2];  [3];  [1];  [1];  [4];  [5];  [5];  [2];  [2];  [2];  [1]
  1. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States)
  3. Univ. of Science and Technology Beijing, Beijing (China)
  4. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States); Univ. of Science and Technology Beijing, Beijing (China)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1279425
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
Additional Journal Information:
Journal Volume: 639; Journal Issue: C; Journal ID: ISSN 0921-5093
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; oxide dispersion-strengthened steel; atom probe tomography; scanning transmission electron microscopy; synchrotron X-ray scattering

Citation Formats

Miao, Yinbin, Mo, Kun, Zhou, Zhangjian, Liu, Xiang, Lan, Kuan -Che, Zhang, Guangming, Miller, Michael K., Powers, Kathy A., Mei, Zhi -Gang, Park, Jun -Sang, Almer, Jonathan, and Stubbins, James F. On the microstructure and strengthening mechanism in oxide dispersion-strengthened 316 steel: A coordinated electron microscopy, atom probe tomography and in situ synchrotron tensile investigation. United States: N. p., 2015. Web. doi:10.1016/j.msea.2015.05.064.
Miao, Yinbin, Mo, Kun, Zhou, Zhangjian, Liu, Xiang, Lan, Kuan -Che, Zhang, Guangming, Miller, Michael K., Powers, Kathy A., Mei, Zhi -Gang, Park, Jun -Sang, Almer, Jonathan, & Stubbins, James F. On the microstructure and strengthening mechanism in oxide dispersion-strengthened 316 steel: A coordinated electron microscopy, atom probe tomography and in situ synchrotron tensile investigation. United States. doi:10.1016/j.msea.2015.05.064.
Miao, Yinbin, Mo, Kun, Zhou, Zhangjian, Liu, Xiang, Lan, Kuan -Che, Zhang, Guangming, Miller, Michael K., Powers, Kathy A., Mei, Zhi -Gang, Park, Jun -Sang, Almer, Jonathan, and Stubbins, James F. Tue . "On the microstructure and strengthening mechanism in oxide dispersion-strengthened 316 steel: A coordinated electron microscopy, atom probe tomography and in situ synchrotron tensile investigation". United States. doi:10.1016/j.msea.2015.05.064.
@article{osti_1279425,
title = {On the microstructure and strengthening mechanism in oxide dispersion-strengthened 316 steel: A coordinated electron microscopy, atom probe tomography and in situ synchrotron tensile investigation},
author = {Miao, Yinbin and Mo, Kun and Zhou, Zhangjian and Liu, Xiang and Lan, Kuan -Che and Zhang, Guangming and Miller, Michael K. and Powers, Kathy A. and Mei, Zhi -Gang and Park, Jun -Sang and Almer, Jonathan and Stubbins, James F.},
abstractNote = {In this study, an oxide dispersion-strengthened (ODS) 316 steel was developed to simultaneously provide the advantages of ODS steels in mechanical strength and radiation tolerance as well as the excellence of austenitic steels in creep performance and corrosion resistance. The precipitate phases within the austenite matrix were identified by the combined techniques of atom probe tomography (APT), scanning transmission electron microscopy equipped with electron dispersive X-ray spectroscopy (STEM-EDS), and synchrotron wide-angle and small-angle X-ray scattering (WAXS and SAXS). Coarse TiN, hexagonal YAlO3 and orthorhombic YAlO3 precipitates were found along with fine Y-Ti-O nanoparticles. In situ WAXS experiments were performed at room and elevated temperatures to examine the size effect on the load partitioning phenomenon for TiN, hexagonal YAlO3 and Y2Ti2O7 phases. In addition, the dislocation density evolution throughout the tensile tests was analyzed by the modified Williamson-Hall method and confirmed by transmission electron microscopy (TEM) observations, revealing the difference in plasticity at various temperatures.},
doi = {10.1016/j.msea.2015.05.064},
journal = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},
issn = {0921-5093},
number = C,
volume = 639,
place = {United States},
year = {2015},
month = {5}
}